M29 is generally believed to have been operated by Hungarian intelligence and transmitted from Budapest area. Morse code counterpart to G04. Last heard in 2003.
The transmission format is given below. The speed was 12 words per minute. One dash was used for zero, rather than five.
|VVV VVV DE VDE VDE VDE||18||18||58||58||8||8||1930||1930||74963 74963 75298 75298 ...||AR|
|2-figure group, purpose unknown||Amount of 5-figure groups in the message||Day of the month||Transmission time (UTC)||5-figure paired groups|
|Repeated for 5 minutes|
"VDE" was a bogus callsign, officially allocated to Canada. Note the complex preamble that G04 does not have. The same non-random encryption method as G04 was employed for the messages, see the G04 page for details.
[Based on ENIGMA 2000 Morse Profiles List]